An experimental configuration is analyzed in order to Study plasma modes in
a superconducting wire deposited onto SrTiO3. A dispersion relation has be
en derived by evaluating the effect of the environment surrounding the wire
. It corresponds to the one-dimensional dispersion law predicted for an iso
lated superconducting wire. Preliminary measurements are presented. They sh
ow 1D plasma modes in the optimized experimental configuration here studied
.